-4(z-21)=42

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Solution for -4(z-21)=42 equation: 



-4(z-21)=42

We move all terms to the left:

-4(z-21)-(42)=0

We multiply parentheses

-4z+84-42=0

We add all the numbers together, and all the variables

-4z+42=0

We move all terms containing z to the left, all other terms to the right

-4z=-42

z=-42/-4

z=10+1/2

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